the world > space > relative position > closed or shut condition > that which or one who closes or shuts > a barrier > [noun] > gate > gate across road (2)
(in a dam, weir, etc.) a gate or sluice that drops open automatically as a flood-prevention measure when water levels reach a certain height; = f…
A gate at the entrance to an enclosure for livestock, an enclosed field, etc. Also: a gate placed across a public road.